ST92250CV2Q-Auto STMicroelectronics, ST92250CV2Q-Auto Datasheet - Page 214
ST92250CV2Q-Auto
Manufacturer Part Number
ST92250CV2Q-Auto
Description
8-bit MCU for automotive
Manufacturer
STMicroelectronics
Datasheet
1.ST92150JDV1QAUTO.pdf
(430 pages)
Specifications of ST92250CV2Q-Auto
Internal Memory
Single Voltage FLASH up to 256 Kbytes, RAM up to 8Kbytes, 1K byte E3 TM (Emulated EEPROM)
Minimum Instruction Time
83 ns (24 MHz int. clock)
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ST92124xxx-Auto/150xxxxx-Auto/250xxxx-Auto
MULTIPROTOCOL SERIAL COMMUNICATIONS INTERFACE (Cont’d)
10.5.4 SCI-M Operating Modes
10.5.4.1 Asynchronous Mode
In this mode, data and clock can be asynchronous
(the transmitter and receiver can use their own
clocks to sample received data), each data bit is
sampled 16 times per clock period.
The baud rate clock should be set to the ÷16 Mode
and the frequency of the input clock (from an ex-
ternal source or from the internal baud-rate gener-
ator output) is set to suit.
Figure 108. Sampling Times in Asynchronous Format
214/430
9
SDIN
rcvck
rxclk
LEGEND:
SIN:
rcvck:
rxd:
rxclk:
rxd
Serial Data Input line
Internal X16 Receiver Clock
Internal Serial Data Input Line
Internal Receiver Shift Register Sampling Clock
0
1
2
3
4
5
10.5.4.2
Synchronous Clock
In this mode, data and clock are synchronous,
each data bit is sampled once per clock period.
For transmit operation, a general purpose I/O port
pin can be programmed to output the CLKOUT
signal from the baud rate generator. If the SCI is
provided with an external transmission clock
source, there will be a skew equivalent to two
INTCLK periods between clock and data.
Data will be transmitted on the falling edge of the
transmit clock. Received data will be latched into
the SCI on the rising edge of the receive clock.
7
8
9
Asynchronous
10
11
12
13
14
Mode
15
VR001409
with
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